Question

The rate for shipping by air express is $8.50 per 100 kg.

Which is the cost for a 250 kg shipment?

Answer 1

It will cost $21.25

Explanation:

We can use ratios to solve

8.50 x

-------- = -----------

100 kg 250 kg

Using cross products

8.50 * 250 = 100 x

Divide each side by 100

8.50 * 250/100 = x

21.25 = x

It will cost $21.25